Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 62 for “"growth behavior"”.
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The fatigue crack growth behavior of superelastic nickel titanium
Understanding of fatigue crack growth phenomena in shape memory alloys under superelastic conditions continues to elude the scientific community: The stress induced martensite phase causes deviations of stress intensity and state at the tip from the classical handbook solutions widely relied on for …
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Growth behavior of fibroblasts influenced by small changes in polymer structure
… towards cellular attachment and in turn, cell growth on the particular polymer. Surface properties of the material were considered to directly influence the properties of the adherent cells including cellular growth and reorganization. The present study is aimed at comparing cell growth on …
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Crack growth behavior and failure micromechanisms in three heat-resistant materials at elevated temperature
Item marked as restricted to the 'UIUC Users [automated]' Group (id=2) by Howard Ding (hding2@illinois.edu) on 2011-05-07T15:05:13Z Item is restricted indefinitely.
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Evaluation of two-stage weaning and trace mineral injection on receiving cattle growth, behavior, and health
… and trace mineral injection on receiving cattle growth, behavior, and health. Two hundred ninety nine (163 heifers and 136 steers) Angus and Simmental × Angus calves were utilized in a 2 × 2 factorial design. Calves were blocked by location and sex, and assigned to one of four treatments: 1) …
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In-situ study of the influence of additives on the growth behavior of copper electrodeposits on copper single crystal
… process dominated by surface diffusion and step growth.</p><p>In chloride containing solutions, square-pyramidal mounds were initiated and grew to cover the surface. Mound slope increased with deposition time with no indication of reaching a steady-state value. This growth mode was consistent …
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Comparative in vitro study of the proliferation and growth behavior of human osteoblast-like cells on various 2D-biomaterials
… host implantation. The in vitro study of the growth behavior of osteoblasts onto the surface of the biomaterials provided a basic knowledge of cell-biomaterial interactions and did as a screening method for the development of biomaterials in vivo. In this in vitro study, human osteoblast-like …
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The effects of carburizing environments on elevated temperature fatigue crack growth behavior in the nickel-base superalloy nimonic 115
Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Materials Science and Engineering, 1981.
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Mechanics of fatigue damage in titanium-graphite hybrid laminates
… evaluates the facesheet crack and delamination growth behavior of TiGr laminates. The delamination growth behavior is studied by isolating delamination growth using TiGr specimens with facesheet seams. The growth rate of delamination from facesheet seams is related via a power law to the applied …
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Fatigue crack growth in polycrystalline alumina at high temperatures
High temperature crack growth behavior in a commercial and a hot-pressed polycrystalline Al$\sb2$O$\sb3$ was examined under monotonic tensile loading (static fatigue) and under Mode-I tension-tension cyclic loading (cyclic fatigue). The investigation of fatigue crack growth in polycrystalline …
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Sub-critical crack growth in a ceramic and a ceramic composite: Effects of monotonic loads, cyclic loads, and high temperatures
… and also allow considerable sub-critical crack growth prior to failure. The sources of toughening processes are the microstructural elements in the crack wake which induce closure tractions on the crack. This experimental and theoretical study examines the sub-critical crack growth behavior in …
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Heavy rare earth superlattices: Epitaxial growth, structure, and magnetic properties
… in this thesis research. Studies of the growth behavior of hcp rare earth metals on bcc transition metal (110) and (211) surfaces, using electron and x-ray scattering probes, are presented. The structural and magnetic properties of Dy-Y and Er-Y superlattices oriented on the (0002) axis …
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Fatigue crack growth in ceramics containing a viscous grain boundary phase at elevated temperatures
Elevated-temperature crack growth behavior in a commercial Al$\sb2$O$\sb3$ and a hot-pressed 30 vol.% TiB$\sb2$-SiC composite was examined under tensile static loading (static fatigue) and tension-tension cyclic loading (cyclic fatigue). The study was carried out at temperatures of …
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Mathematical Aspects of Field Theory: Nahm's Equations and Jacobi Forms
… of black holes. In connection to this, the growth of a certain sum about a term q^a y^b in the Fourier-Jacobi expansion of the underlying weak Jacobi form is of interest to us. We discover that the weak Jacobi forms which are quotients of theta functions give us a large class of forms that …
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Durability of Polymer /Metal Interfaces Under Cyclic Loading
… by a piezoelectric actuator. Subcritical crack growth was observed along the epoxy/aluminum interface and the growth rate was found to depend on the magnitude of the applied electric field. Kinetics of the crack growth was correlated with the piezoelectric driving force. The resulting crack …
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The kinetics of growth competition during rapid solidification of ternary steel alloys
The rapid solidification growth behavior of ternary stainless steel alloys was examined using electromagnetic levitation and high-speed digital imaging, and the growth behavior of the stable fee austenite (gamma) phase into the pre-existing metastable bee ferrite [delta] solid/liquid dendrite array …
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In-situ investigation of lithium dendrite growth and its interactions with a polymer separator in a lithium metal cell
… lithium battery duringcharging. Lithium dendrite growth can negatively affect battery cycle life and safety. Observing the dendrite growth process and revealing its interaction with other components is necessary to improve battery safety. This study uses a transparent optical cell to directly …
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Fracture behavior of CPM 10V
… toughness (K <sub>Ic</sub>), fatigue crack growth rate (da/dN), and tensile behavior of a commercial powder metal alloy, CPM 10V, was investigated. Fracture toughness was increased by increasing the tempering temperatures and decreased by increasing the austenitizing temperature. These …
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Transient Shear Flow Rheology of Concentrated Long Glass Fiber Suspensions in a Sliding Plate Rheometer
Transient viscosity growth measurements at the startup of shear flow were performed on long glass fiber-filled polypropylene. Samples were prepared with fibers pre-oriented either in 1-direction, 3-direction or random in 1-3 plane, where the 1-direction is the direction of shear motion, the …
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Condensation on superhydrophobic copper oxide nanostructures
… on copper surfaces. The condensation behavior of these samples was characterized using an optical microscope and an environmental scanning electron microscope by quantifying the distribution of nucleation sites and droplet growth behavior. Using the knowledge gained from these studies, …
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CAFM Studies of Epitaxial Lateral Overgrowth GaN Films
… that are detrimental to device fabrication. Two growth techniques that were used to improve this leakage behavior for samples in this study included: epitaxial lateral overgrowth (ELO) and nano-ELO using a Si3N4 film. Both techniques decrease defects such as threading dislocations by controlling …
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